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Showing papers on "Buck converter published in 1972"


Patent
24 Jan 1972
TL;DR: An automatic converter testing system including a digital-to-analog converter, means for providing a test input to the D2D converter, an analog to digital converter responsive to the output from the digital to analog converter as discussed by the authors, and means for enabling the analogto-digital converter to accept input from the D1D converter and produce a digital output as a function thereof.
Abstract: An automatic converter testing system including a digital-toanalog converter, means for providing a test input to the digital-to-analog converter, an analog-to-digital converter responsive to the output from the digital-to-analog converter, means for enabling the analog-to-digital converter to accept input from the digital-to-analog converter and produce a digital output as a function thereof, means for measuring the input to the analog-to-digital converter from the digital-to-analog converter, means for detecting a change in the digital output of the analog to digital converter, and means responsive to the means for detecting, for reading out the measured input and simultaneous output of the analog-to-digital converter, one of the converters being a reference instrument, the other being the instrument under test.

12 citations


Proceedings ArticleDOI
22 May 1972
TL;DR: In this article, the authors present the results of the development of a series of nine programs which may be used to design the inductor in each of three basic converter forms in which the transistor switch is controlled by a regulator employing a constant frequency, constant on-time, or constant off-time pulsewidth modulator.
Abstract: The power handling portion of most regulated dc-to-dc electronic power conditioning circuits using a single self inductor for energy storage and transfer can usually be represented by one of three basic or canonical circuit forms. The circuit elements, consisting of an inductor, a transistor switch, a diode, and a filter capacitor may be arranged with appropriate topology to yield a voltage step-up converter, a current step-up converter, or a voltage step-up/current step-up converter. The design of a power converter requires making a number of decisions relating to the parameters of the circuit, including choice of semiconductor elements, filter capacitor, magnetic core material, magnetic path configuration and winding wire size. In the past, converter designs generally have required that several trial combinations of core size and permeability be tested by hand calculations. Experience and intuition were relied on to narrow the range of core size and permeability before starting the trial design computations. Recently, several computer-aided procedures have been described for use in the design . of the inductor for a single type of converter) This paper presents the results of the development of a series of nine programs which may be used to design the inductor in each of three basic converter forms in which the transistor switch is cont rolled by a regulator employing a constant frequency, constant on-time, or constant off-time pulse-width modulator. These nine programs, which contain the design algorithms and evaluation segments, are augmented by three additional programs which generate displays on a storage oscilloscope driven by the computer. These displays have proved to be extremely useful in evaluating the characteristics of the various converter-regulator combinations from an overall or global point of view.

11 citations


Patent
19 Apr 1972
TL;DR: A voltage converter set designed to feed an antiskid logic element and to modify the wheel speed sensor signals is described in this paper, where the converter set includes a proportional converter and an inversely proportional converter, connected through a diode.
Abstract: A voltage converter set designed to feed an antiskid logic element and to modify the wheel speed sensor signals. The converter set includes a proportional converter and an inversely proportional converter, connected through a diode, so that the output voltage of the converter set is higher for the low wheel speeds. The invention also provides the combination of several converter sets with a single antiskid logic element in a circuit of the exclusive ''''OR'''' or ''''SELECT LOW'''' type.

6 citations


Patent
22 Mar 1972
TL;DR: In this article, an analogue-to-digital converter is described, which comprises a generator for supplying reference voltages decreasing in amplitude in accordance with a binary law, and digital processing means for the signal representing the sign of a particular algebraic sum for supplying, in serial form, the numerical information representing the amplitude.
Abstract: The invention relates to an analogue-to-digital converter. The converter comprises a generator for supplying reference voltages decreasing in amplitude in accordance with a binary law, means for adding the reference voltages algebraically in succession to the input voltage in decreasing order, these voltages being added with a sign such that the successive sums tend towards zero, means for supplying a signal representing the sign of a particular algebraic sum, this signal being used to give the following reference voltage the sign suitable for the following algebraic sum to approach zero, and digital processing means for the signal representing the sign for supplying, in serial form, the numerical information representing the amplitude.

5 citations


Journal ArticleDOI
J. Contino1, J. Cielo
TL;DR: For a single-ended high-frequency converter stage, the relationships among output power, switch current and voltage ratings, input voltage range, and reset voltage reveal the criticality of transformer design.
Abstract: A means of assessing the relative merits of single-ended and push-pull switching converter or inverter stages is presented. The dependency of those merits upon the range of input voltage and output current is set forth. For a single-ended high-frequency converter stage, the relationships among output power, switch current and voltage ratings, input voltage range, and reset voltage reveal the criticality of transformer design. Transformer stored energy considerations for optimum output power dictate absolute control of leakage reactance as well as the shape of the magnetization curve.

2 citations